User blog comment:Redmight/Blackbane castle and the Island of Despair/@comment-4547544-20111230223748/@comment-2207385-20120102232130

Hydra nods, "I worry too, and yes they have lots of ways, one of the easiest is that they have this special blue rock, it glows when near magic, but it tends to fail when used on young children, they also brand them with a sign somewhere on their bodies to know they are mages when captured, and lastly mages have the usual traits that they identify them, like living alone, being a tad strange, and having this faint energy behind their eyes all the time.